Search-and-rescue teams composed of members of the Firefighters' Corps, Red Cross, Social Security System (Caja), National Police and CNE stand at the ready.
The toll from the authorities was preliminary and could rise, as rescue crews and volunteers in Mexico City – home to 20 million people – clawed through the rubble of collapsed buildings looking for survivors and bodies.
Alvaro Murillo takes an in-depth look at the often confusing, frequently surprising, and still ongoing case of the so-called #cementazo, and what it means for Costa Rica.